PubMed:32088679 / 120-122
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T19","span":{"begin":0,"end":2},"obj":"IN"}],"text":"On"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok23","span":{"begin":0,"end":2},"obj":"IN"}],"text":"On"}